Flow-induced Agitations Create a Granular Fluid
arXiv:0911.4635 · doi:10.1103/PhysRevLett.104.078302
Abstract
We fluidize a granular medium through localized stirring and probe the mechanical response of quiescent regions far away from the main flow. In these regions the material behaves like a liquid: high-density probes sink, low-density probes float at the depth given by Archimedes' law, and drag forces on moving probes scale linearly with the velocity. The fluid-like character of the material is set by agitations generated in the stirred region, suggesting a non-local rheology: the relation between applied stress and observed strain rate in one location depends on the strain rate in another location.
References in corpus (5)
- Unified force law for granular impact cratering
- Creep motion of an intruder within a granular glass close to jamming
- Stresses in Smooth Flows of Dense Granular Media
- Shear zones in granular media: 3D Contact Dynamics simulation
- Shear Zones in granular materials: Optimization in a self-organized random potential
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- Local rheological measurements in the granular flow around an intruder
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